baber/WOPTO huggingface dataset:
Patent GB-533235-A (GB)
Title: Improvements in or relating to method of and apparatus for separating undesired particles from a liquid suspension
IPC: B04C5/185
Filed: 1939-10-19
Abstract: 533,235. Centrifugal separators. NICHOLS ENGINEERING & RESEARCH CORPORATION. Oct. 19, 1939, No. 28270. Convention date, Nov. 19, 1938. [Class 23] Undesired particles are separated from a liquid suspension, especially a suspension used in the manufacture of paper, in a separator 10 of the type described in Specification 507,412 in which a downward vortex is formed from the inlet 12 and a second vortex travels after reversal upwards through the first vortex to the clean liquid outlet 18. Below the lower ends of the vortices is fixed a disc 20 with a number of apertures leading to a small conical chamber 23 with a restricted conduit 24 opening into a settling chamber 25. This chamber contains liquid which remains in a quiescent state, and a constant drawing off of liquid from the upper peripheral portion is effected by the pipe 26. This causes a small continuous flow from the separator 10 to the chamber 25 and the impurities are carried into the chamber by this flow. The chamber can be emptied when necessary by the valve 29 and washing water can be supplied through the valve 30. An annular obstruction 15 is placed in the separator to restrict the diameter of the vortex. A number of separator units 40, Fig. 2, may be employed together, and the liquid withdrawn from the settling chambers 25. is passed by the pipe 45 and the pump 46 to a secondary separator 48 in which the impurities are separated out to pass to the corresponding settling chamber, while the liquid passes to the tank 47. The purified liquid which passes over the overflow weir 51 of this tank is conducted by the pipe 52 to the intake of the pump 41 which supplies the intake manifold 42 of the. separators, or to the "white water" system of a paper making machine, or to the main intake of the machine. The liquid from the bottom of the tank 47 passes round a baffle 54 and through the pipe 53 to the pump 46 so that an adequate flow is assured through the separator 48. The tank also has a liquid supply through the pipe 49 controlled by a valve 50 operated by a float 50<SP>1</SP>.
Patent GB-152026-A (GB)
Title: Improvements in the treatment of leucitic rocks for the purpose of rendering available the potash contained therein
IPC: C22B26/10
Filed: 1920-10-06
Abstract: Leucite is ground to an impalpable powder, preferably after first calcining alone or in presence of super-heated steam, lime, or magnesia, and the potash is then soluble in dilute acids such as acetic, formic, citric, oxalic, and carbonic acids so that it may be used as a fertilizer.  The potash may be extracted wholly or in part by treating in an autoclave with carbonic acid or with one of the organic acids mentioned at raised temperature and pressure.  The product is leached to extract the potassium salt, and the residue, if it still contains potassium, may be used as a manure.ALSO:Alkali-metal compounds, obtaining from complex silicates Leucite is ground to an impalpable powder, preferably after first calcining alone or in presence of superheated steam, lime, or magnesia, and the potash is then soluble in dilute acids such as acetic formic, citric, oxalic, and carbonic acids so that it may be used as a fertilizer.  The potash may be extracted wholly or in part by treating in an autoclave with carbonic acid or with one of the organic acids mentioned at raised temperature and pressure. The product is leached to extract the potassium salt, and the residue, if it still contains potassium, may be used as a manure.
Patent GB-333425-A (GB)
Title: Improvements in devices for connecting glass plates or the like
IPC: A47F5/00
Filed: 1929-09-18
Abstract: 333,425. Schmidt, J. P. Sept. 18, 1929. Joints and connections.-A device for connecting .together glass plates b or the like comprises two connected or integral fastening plates a, held at an adjustable angle to each other and formed, on edges situated in the same plane, with lips a' adapted to engage over the edges of the glass plates and allowing the fastening plates to be moved to any position along the edge of one of the glass plates. Resilient tongues a<3> may be stamped out of the members a.
Patent GB-286757-A (GB)
Title: Improvements relating to apparatus for the heating and cooling of fluids
IPC: F28F13/12
Filed: 1926-11-12
Abstract: 286,757. Stancliffe, C. W. Nov. 12, 1926. Movable-abutment type; heating parts; rotary pumps.-A pump of the gear wheel type has a heating casing A, gear-wheels C with heating passages D, and idler wheels E.
Patent GB-188920-A (GB)
Title: A photographic film developing device
IPC: G03D13/06
Filed: 1921-10-27
Abstract: 188,920. Sugiura, R., and Okimoto, K. Oct. 27, 1921. Trays, dishes, and containers for flat films, lengths of film, and roll films, with provision for viewing development.-In an apparatus for developing roll films a developing tube 1 of flexible material is used, into which the film F<2> is drawn from the spool casing 7 by a clip 13 and cord 12. The tube is clamped at the ends by clamps 4. The developing or other liquid is introduced by a flexible. funnel attachment 2. The spool casing is formed of hinged parts 7, and has a slot 9 for the passage of the film and a flange 11 for attachment to the. flexible tube. For observation purposes the tube may be made wholly or in part of non-actinic transparent material.
Patent GB-912199-A (GB)
Title: Apparatus for and method of packaging articles
IPC: B65B11/52
Filed: 1960-08-18
Abstract: 912,199. Feeding sheets. NEVINS CO. Aug. 18, 1960 [Nov. 16, 1959], No. 28630/60 Class 100 (1). [Also in Group XVII] In a packaging machine, a blank feeding station 22 has a table surface 62 on which the blanks 26 are disposed in sloping, co-engaging positions. Secured to table surface 62 is a stepped platform 65. Leaf-spring peelers 69 and 70 engage the blanks to effect a positioning of the blanks on portions 66, 67 of platform 65, and also to strip them (components) from suction-cup type lifters 72, 73 respectively, which are carried by piston and cylinder assemblages 75, 76 mounted on spindles 78, 79. The assemblages are linked for simultaneous movement by a bell-crank and linkage system 80, shown dotted through rods 82, 83 to cam 84. Each blank 26 is picked-up from platform 67 by a holder 24 which has angleshaped members 89 for engaging corner portions of the blank.
Patent GB-483334-A (GB)
Title: Improvements in protective systems for electric arc converters
IPC: H01H50/20
Filed: 1936-10-21
Abstract: 483,334. Electrically released switches. GENERAL ELECTRIC CO., Ltd., TAYLOUR. H. H., WALKER. H. V., and GIBSON, J. W. Oct. 21, 1936, No. 28632. [Class 38 (v)] [Also in Group XXXV] Are suppressing means for an electric arc converter comprises a high speed relay having a holding coil 25, a tripping coil 13 adapted to reduce the effective holding flux and a resetting coil 22, tripping of the relay effecting closure of a circuit to supply a blocking potential to the grids of the converter or causing opening of normally closed contacts through which a starting potential is applied to control electrodes. When the relay is associated with a rectifier the coil 13 is connected to effect tripping on the occurrence of a back-fire in the rectifier or a short circuit in the direct current network. On tripping of the relay the arm 1 is moved by the spring 5 and connects contacts 17 in the grid control circuit to stop the converter and also connects contacts 16 energizing coil 20 which then closes the circuit of the resetting coil 22. The coil 22 then attracts the armature 8 which moves down connecting the contacts 23 which are in parallel with contacts 17, and turning the lever 2 to return the arm 1 contacts 16, 17 being then disconnected and coils 20, 22 being de-energized. If the fault has cleared, arm 1 is held in position against the spring 5 and armature 8 moves upwards disconnecting the contacts 23 to permit operation of the converter and returning lever 2 to permit uninterrupted movement of arm 1 when the relay is again tripped. In an alternative arrangement tripping of the relay effects opening of normally closed contacts in a circuit supplying starting potentials to the converter the resetting coil also controlling contacts in the same circuit. Specification 252,514, [Class 38 (v)], is referred to.
Patent GB-138314-A (GB)
Title: Improved vise
IPC: B25B1/24
Filed: 1919-11-19
Abstract: 138,314. Rocher, M. Jan. 28, 1919, [Convention date]. Addition to 131,883. Vices.-Consists in modifications of detail of the screw and cam actuated vice described in the parent Specification. (1) The fixed jaw is formed in three parts, the two outer parts A being cast on the base-plate and the central part B being fitted between them. (2) One of the followers of the cam C is a roller D mounted on a pin E, which is adapted to break under excessive strain to prevent damage to more important parts of the vice. (3) The cam is shaped to bear against the followers E, H in all positions. (4) The pivoted or other jaw face G of the movable jaw is secured in position by a screw readily accessible from above. (5) A guard K is provided to exclude filings from the operating screw.
Patent GB-271742-A (GB)
Title: Improvements in epicyclic gearing
IPC: F16H1/32
Filed: 1926-11-15
Abstract: 271,742. Braren, L. K. Nov. 15, 1926. Toothed gearing. - In eccentric epicyclic reduction gearing employing roller teeth, a driving-member 1, 4, 42 carries eccentrics 2, 3 carrying on roller bearings wheels 9, 10 with teeth curves formed as equidistants to continuous cycloids or trochoids and engaging rollers 13, 14 carried on pins 15, 16 secured in the cover 7 and stationary casing 17. The roller members differ by one from the tooth members, so producing a slow forward or reverse drive of the wheels 9, 1@ which is conveyed to the driven shaft 8 by pins 19 carrying rollers 21, 20 engaging circular holes 45 in the wheels, the holes and teeth being preferably equal in number. All the pins are slightly flexible to equalize the drive and may be supported by loose rings 18, 22, 23 or lug pins, not shown. The rollers 13, 14 may be carried on the same pin. In a modification, one wheel only is used. Balance weights 26, 27 for the wheels 9, 10 are provided. When the rollers are more numerous than the teeth, the teeth are preferably formed as equidistant to continuous prolate epitrochoids.
Patent GB-1277455-A (GB)
Title: Composite coupled-mode electromechanical filter
IPC: H03H9/54
Filed: 1969-06-06
Abstract: 1277455 Electromechanical filters VERNITRON CORP 6 June 1969 [6 June 1968] 28899/69 Heading H3U A filter comprises a piezo-electric film 14 vapour-deposited on a substrate 12, resonators being formed by pairs of electrodes 16, 18 and 20, 22 connected, respectively, to input and output terminals 24, 26 and 28, 30, the mechanical coupling between the two resonators determining the band-pass characteristics. The electrodes are formed by vapour deposition of gold, chromium or aluminium on the substrate 12 and film 14. Preferably, the materials of the film 14 and substrate 12 have equal and opposite frequency temperature coefficients. A preferred material for substrate 12 is quartz but alternatively it may be of Invar (Registered Trade Mark), elinvar, lithium gallate, lithium niobate, lithium tantalate or aluminium oxide. The material of film 14 may be cadmium sulfide, cadmium selenide, zinc oxide, beryllium oxide, wurtzite zinc sulfide, alumium nitride, lithium niobate or lithium tantalate. As shown, the film 14 is polarized perpendicularly to its surface and the piezo-electric axis 32 is perpendicular to the surface of substrate 12. However, this axis 32 may be parallel to, or inclined to, the substrate surface. The material of the film 14 may vibrate in the thickness extensional mode or shear mode in dependence upon the manner in which it is vapour-deposited. The thickness of the film 14 is about 1/10 that of the substrate 12; similarly, the thickness of the electrodes 16, 18, 20, 22 is about 1/10 that of the film 14. In a modification (Fig. 2, not shown) additional mechanicallycoupled resonators are provided between the input and output resonators, these additional resonators being formed by masses similar to the electrodes.
Patent GB-985997-A (GB)
Title: A method of plasticising corundum or aluminium oxide raw materials
Inventor: RICHTER WALTER
Filed: 1961-08-11
Abstract: Practically non-thixotropic, gel-like hydroxides of aluminium are added to corundum or aluminium oxide raw materials as plasticizers, so as to enable them to be worked up in the cold state by the extrusion or drawing process.  The gel used has an aluminium oxide dry content of 5-10% and an aluminium oxide to chloride or sulphate ratio greater than 10: 1.
Patent GB-299196-A (GB)
Title: Clamp for joining plywood or similar material by the edges
IPC: B65D6/36
Filed: 1927-11-01
Abstract: 299,196. Fripp, P. Nov. 1, 1927. Spiked plates.-A sheet-metal clamp for joining together the members of a plywood or similar box, frame, &c. at the edges thereof, consists of an angle-piece A and a continuous double-web portion B which is disposed in slots in the members with the angle-piece A abutting against the external faces thereof while parts B<1> of the portion B are bent against the internal faces of the members to hold them together. The clamp may be made from a single blank as shown or from three blanks, in which case one blank forms the angle.piece A and the other blanks the two webportions B. The edges of the parts B' may be serrated and bent so as to enter the plywood &c. when the parts B<1> are bent against the internal faces thereof and the corners of the piece A may also be bent to enter the external faces of the plywood &c.
Patent GB-841901-A (GB)
Title: Ammunition cartridges
Inventor: MILLER CHARLES EDWIN
IPC: F42B7/06
Filed: 1957-09-16
Abstract: 841,901. Ammunition cartridges. OLIN MATHIESON CHEMICAL CORPORATION. Sept. 16, 1957, No. 29135/57. Class 9(1). A shot-gun cartridge having a case of pliable resinous material such as polyethylene with a liner of non- resinous material separating the shot from the case is formed by moulding, a brass washer 10 being placed in the die around the pin used to form the primer cavity 3 before introducing the plastic material. The case wall 1 is tapered in thickness from the base 2 to the mouth 4. After the moulded case has cooled a primer assembly is inserted in the cavity 3, a wad 15 followed by a propellant charge 6 and further wads 7, 8 are then introduced into the case. A paper liner 9 is placed on the wad 8 and filled with shot 20 before inserting a closure wad 12 and bending or crimping the case over the wad 12 at about 75C. A paper disc is forced through a die by means of a punch to form the liner 9 having pleats 16, in the sidewall, Fig. 4. Alternatively the liner 9 may be made from three discs of stepped diameter arranged concentrically before being forced through the die. The discs may be glued together. A liner, which may be partially embedded in the case, open at both ends may be used. The moulding resin may be 80 parts polyethylene mixed with 20 parts calcium carbonate moulded at 450F.,the injection pressure being 10,000 lbs. p.s.i. Fibre glass may be added to the resin composition. The primer 11 instead of having force fit in the cavity 3 may be secured by adhesive. The liner 9 may be slit at intervals to remove excess paper and the resulting edges overlapped to form the tube.
Patent GB-695930-A (GB)
Title: Improvements in or relating to tiles and the like for flooring and other purposes
Inventor: STEK ARIE VAN
IPC: B27M3/06
Filed: 1951-12-13
Abstract: 695,930. Tiles. MASOTILE MANUFACTURING CO. (PTY.), Ltd. Dec. 13, 1951, No. 29252/51. Class 87(i) A floor or wall tile comprises a square facing layer 1 and a similar but larger backing layer 2 having its edges recessed to provide projecting lugs 3 and wider recesses 4 therebetween to allow of play between adjacent tiles when they are being laid. The lugs and recesses may be squarecornered, bevel-cornered or of sinusoidal form. The backing layer may be formed with an aperture or apertures 6 or with a recess or recesses on the face abutting the facing layer.
Patent GB-423728-A (GB)
Title: Improvements in illuminating devices for microscopes
IPC: G02B21/08
Filed: 1934-10-13
Abstract: 423,728. Microscopes. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Oct. 13, 1934, No. 29346. Convention date, Oct. 17, 1933. [Class 97 (i)] In an illuminating device comprising a rotatable carrier for a number of condensers to be used alternatively, the axis of rotation of the carrier is at right-angles to the axis of the microscope objective and the axes of the condensers lie in the plane containing the axis of the objective and at right-angles to the said axis of rotation. The condensers 21 are carried by a member 19 rotatably mounted on a tube 20 containing the light source 24 and reflector 23, this tube being secured to a slide 8 mounted in a guide on the stand 1 and urged upwardly by a compression spring 10. The upward movement of the slide is limited by a stop 11 the lower end of which bears on an eccentric 12 which can be rotated so as to adjust the vertical position of the condenser in use to adapt the point of convergence of the illumination rays to the thickness of the object carrier in use. The slide is moved downwardly before changing the condenser to prevent the condenser during rotation from fouling the stage 3, the downward movement being limited by a shoulder 14 on the slide abutting against a fixed plate 7. Locking means are provided to prevent rotation of the carrier 19 when one of the condensers is in position for use, and also to prevent vertical movement of the carrier when it is withdrawn to its lowermost position and when, in addition, none of the condensers has its axis in alignment with that of the objective 5. The locking means comprises a spring plunger 15 mounted in the slide 8 and adapted to enter one of a series of notches 18 in the carrier 19 when a condenser is in position so as to lock the carrier against rotation. When the shoulder 14 abuts against the plate 7 the plunger 15 is in alignment with an aperture 17 in the stand, so that rotation of the carrier causes the plunger to enter the aperture to prevent movement of the slide until another condenser, is in position for use and the plunger can enter the corresponding notch 18.
Patent GB-650648-A (GB)
Title: Improvements in or relating to tobacco cutting machines
IPC: A24B7/14
Filed: 1948-11-11
Abstract: 650,648. Cutting tobacco. MOLINS, D. W., and MOLINS MACHINE CO., Ltd. Nov. 11. 1948, No. 29353. [Class 5(i)] In a tobacco cutting machine of the kind such as in Specification 588,129 where the tobacco leaves fall down a shoot 1 where they are loosely compacted by an occillated rear wall 2 of the shoot, the opening at the top of the shoot is varied by hand to vary the supply of leaves in accordance with the indications on a power meter 15 of the motor 3 which oscillates the shoot: Such variation is obtained by the operator turning a handwheel 10 to the extent indicated by a coupled pointer 13 whereby screws 12 slide the bearings of the wall pivot-shaft 9 horizontally along slots 10 thus changing the width of the mouth of the shoot. Instead of the power meter an electronic ammeter may be used operated by devices inside a box 14. A relay system may be used to provide automatic adjustment.
Patent GB-423729-A (GB)
Title: Improvements relating to roller mills for cereal grain
IPC: B02C4/28
Filed: 1934-10-13
Abstract: 423,729. Roller mills. SIMON, Ltd., H., and BRIAN, J. C., Bird Hall Lane, Cheadle Heath, near Stockport. Oct. 13, 1934, No. 29369. [Class 59] In a roller mill for cereal grain, the control plate d which moves the feed gate c is supported on a pivot n located at its lower end and at a distance from the plate on the stock side of the latter. The feed gate c is mounted on arms f <1> provided with slots f loosely engaged with pivots e. Extensions g from the gate engage the hooked ends of links h pivoted to the control plate d supported on the knife edge n, the knife edge n being displaced toward the stock side of the plate d. Dampers o may be attached to the plate d and these become embedded in the stock and prevent hunting of the feed gate c. The return of the plate d is facilitated by spring p. Stops j, k, limit the movement of the feed gate. The apparatus may be dismantled without the aid of tools.
Patent GB-152651-A (GB)
Title: Process for the production by the cold way of glaze-like mineral coatings for iron
IPC: C09D1/08
Filed: 1920-10-18
Abstract: 152,651. Friedrich, K.. Oct. 18, 1919, [Convention date]. Coating-processes.-Iron surfaces after being cleaned and moistened are painted with a composition of Portland cement, sand, and water. While this layer is still moist, a second coating is sprayed on, which consists of finely-sifted cement mixed with water, with the addition of bituminous bodies which have been freed from volatile oils and oxidized in presence of alkalies.
Patent GB-504625-A (GB)
Title: Improvements in or relating to the measurement of the resistance experienced by a pile in pile driving
IPC: G01L5/00
Filed: 1937-10-27
Abstract: 504,625. Testing hardness of ground in pile-driving. PIMM, G. B. R. Oct. 27, 1937, Nos. 29396/37 and 17659/38. [Class 106 (ii)] [Also in Group XXI] Comprises a method of determining the resistances to driving of piles in which the mandrel of a test pile is driven into the ground by force transmitted through a tube surrounding the mandrel and the relative movement between the tube and mandrel is measured. A test pile of known type is used comprising a pointed. mandrel 1 surrounded by a tube 2 the mandrel being shouldered out at 3 to the diameter of the tube and a driving cap 5 is fitted to a short length 4. In the tube 4 a vertical slot 6 is formed graduated along one edge 7. A gauge member 8 having a sharp point on the side reverse to that shown is placed with the point pressing hard against the mandrel. The position of the zero mark 10 against the scale is noted. A blow is struck on the tube and the mandrel is projected beyond the tube 2 carrying the gauge 8 with it. The distance moved by the gauge over the scale 7 indicate the relative movement between mandrel and tube. Further blows are now given until the tube again contacts with the mandrel. The number of blows together with the relative distance mentioned above give the ratio of toe resistance to skin resistance. In a modification, a loose collar is clamped to the mandrel, a bracket projecting therefrom through a vertical slot in the tube and carrying a vertical rod. This passes through a hole in a bracket attached to the tube a friction index being adapted to slide on the rod engaging the lever free of the tube bracket. Upon a blow being given to the pile the rod moves down together with the index. The distance between the index and tube bracket is a measure of the relative movement. The rod may be carried by the tube bracket and pass through a hole in the mandrel bracket when the index will engage the top surface of the tube bracket. In a further form the mandrel may project above the tube and the bracket affixed to it above the top of the tube no slot being necessary.
Patent GB-1022234-A (GB)
Title: Separation process
IPC: C12H6/04
Filed: 1962-07-31
Abstract: 1,022,234. Crystallizing. ESSO RESEARCH ENGINEERING CO. July 31, 1962 [Aug. 1, 1961]; Dec. 29, 1961 (2)], No. 29397/62. Heading BIG. [Also in Division F4] Substances are crystallized by contacting a dense dispersion of uniform size droplets of a solution of the substance with an immiscible coolant of different density in countercurrent. A solution of a substance to be crystallized is sprayed by head 24 and the annular baffle 30 deflects the standing vortex 31 of the continuous cooling phase from line 4 so as to produce a uniform dispersion of droplets of solution. The crystalline sludge is withdrawn through opening 29 for separation e.g. by means of the centrifuge described in Specification 1,022,235 while cooling liquid flows out through line 7.